Add 18/75 and 21/90
18/75 + 21/90 is 71/150.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
18/75 = 18 × 6/75 × 6 = 108/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
21/90 = 21 × 5/90 × 5 = 105/450 - Add the two like fractions:
108/450 + 105/450 = 108 + 105/450 = 213/450 - 213/450 simplified gives 71/150
- So, 18/75 + 21/90 = 71/150
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